US3507725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for repairing gas main joints
Assignee: GERALD G WILSON
•
Filing: 1964-11-30
•
Granted: 1970-04-21
•
Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Peter J Hylak
- 👤 Gerald G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:00
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/16; F16L55/162; F16L55/164; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49719
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3272894A
Cited
US3265782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-20 | 1973-10-20 | 1974-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-20 | 1977-10-20 | 1978-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-20 | 1981-10-20 | 1982-04-21 | $7700.00 | Window Closed / Lapsed |